I have an 8mm Mauser that I make people shoot first. After trying to hit something with the sights, work the bolt, and feeling the recoil, I then let them try the Garand, which became the U. S. Army's standard rifle in 1937, about a decade before any other service.
So it isn't about comparing it to modern firearms. It's about appreciating the mechanical genius of the device, developed by one man working alone, who single-handedly doubled the firepower of an Army infantry squad.
John C. Garand stands out as a designer because he designed everything for the garand from the plant layout to the machines to the rifle. For first timers the 8mm mauser might be a challenge but my russian capture k98 is more accurate than my garands,,,,,although I like shooting the M1 better!